Tool



C. W. HOLLINGSWORTH' TOOL Dec. 28 1926. 1,612,020

Filed July 20, 1925 SS r I.

Patented Dec. 28, 1926.

UNITED, STATES PATENT OFFICE.

I CARL -W. HOLLINGSWORTH,

or MARSHALLTOWN, IOWA.

rooL.

Application filed July 20,1925. Serial No. 44,839.

size as to prevent misuse of the device.

A still further object of the invention is to provide a tool of this character which may be readily sharpened without special equipment, thereby ellminating the necessity of using a new tool when the cutting edge becomes dulled.

\Vith the foregoing and other. objects in view which will appear as the descript on proceeds. the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein discloted, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawing:

Figure 1 is'an elevational view disclosing a finishing device constructed in accordance with the invention as positioned in a wrist pin bushing.

Figure 2 is an elcvational view of the device illustrating the cutter and guide in section.

Figure-3 is a sectional view taken on line 8-3 of Figure2.

Figure 4 is a diagrammatic view illustrating the manner of positioning the cutter and guide.

Referring to the drawing in detail, the device includes a body portion 5 which is formed with reduced portions 6 on which the cutter is positioned and 13 on which the guide is positioned.

The cutter is indicated by the reference character 7, the cutter being slightly greater standard or oversized bushings and of suchin diameter than the body portion 5 so that the body portion will move into the space provided by the cutter.

At the forward end of the cutter 7 is the cutting edge indicated at 8 which cutting edge is disposed directly above the cut out portions 9 of the fingers 10 which act to guide the device to its work.

The guiding device which is indicated generally by the reference character 11 embodies a head 12 and fingers 10 and, is so positioned on the reduced portion 13 of body portion 5 that' when force is applied to the body portion 5, the guiding member will be moved forward by the thrust of the shoulder formed between reduced .parts 13 and 6 of the body portion 5, acting on the inner surface of the head 12 of the guiding.

member 11.

In'the use of the device, the head 12 is positioned in the bushing to be finished and the body portion 5 moved until the cutting edge 8 of the cutter 7 is dispoZed at one end of the bushing.

A suitable clamp not shown is now positioned over the connecting rod to engage one side of the connecting rod and one end of the body portion 5, whereupon pressure is brought to bear on the clamp to gradually force the device through the bushing, to the end that the cutting edge will shave portions from the bushing and form a true bearing.

. I claim In a tool of the class described, a body portion having a reduced end portion, the reduced end portion having a reduced outer extremity defining a shoulder. a sleeve cutter adapted to be positioned on the reduced end of the body portion, a tapered guiding member positioned on the reduced outer extremity and adapted to engage the shoulder to restrict movement thereof, said tapered guiding member including a plurality of spr ng fingers, said fingers having their ends contacting with the reduced end portion of the body portion, the intermediate portions of the fingers lying in spaced relation with the reduced end of the body portion.

In testimony that I claim the foregoing as my own, I have hereto atfixed my signature CARL W, HOLLINGSWORTH. 

